CVE-2025-26902: Brizy Pro CSRF Vulnerability Explained

CVE-2025-26902 Overview

A Cross-Site Request Forgery (CSRF) vulnerability has been identified in the Brizy Pro WordPress plugin. This security flaw allows attackers to trick authenticated users into performing unintended actions on the WordPress site where Brizy Pro is installed. When a logged-in administrator visits a malicious page crafted by an attacker, the victim's browser automatically sends a forged request to the vulnerable WordPress site, executing actions with the victim's privileges without their knowledge or consent.

Critical Impact

This CSRF vulnerability enables attackers to execute unauthorized actions on behalf of authenticated WordPress administrators, potentially leading to complete site compromise, unauthorized configuration changes, or data manipulation.

Affected Products

• Brizy Pro WordPress Plugin versions up to and including 2.6.1
• WordPress installations running vulnerable Brizy Pro versions
• All WordPress configurations with Brizy Pro *:*:*:*:pro:wordpress:*:*

Discovery Timeline

• 2025-04-09 - CVE-2025-26902 published to NVD
• 2026-04-28 - Last updated in NVD database

Technical Details for CVE-2025-26902

Vulnerability Analysis

The vulnerability is classified under CWE-352 (Cross-Site Request Forgery), indicating that the Brizy Pro plugin fails to properly validate or include anti-CSRF tokens in state-changing requests. This allows attackers to craft malicious web pages or emails containing forged requests that, when accessed by an authenticated administrator, execute unintended actions on the WordPress site.

CSRF vulnerabilities in WordPress plugins are particularly dangerous because they can be chained with other attack vectors to escalate privileges, modify site content, inject malicious code, or compromise the entire WordPress installation. The network-accessible nature of this vulnerability means attackers can target victims remotely through phishing campaigns or by injecting malicious content on compromised websites.

Root Cause

The root cause of this vulnerability stems from insufficient or missing CSRF token validation in the Brizy Pro plugin. WordPress provides built-in nonce functionality (wp_nonce_field(), wp_verify_nonce(), check_admin_referer()) specifically designed to prevent CSRF attacks. The Brizy Pro plugin versions through 2.6.1 fail to properly implement these protections on one or more state-changing operations, leaving endpoints vulnerable to cross-site request forgery attacks.

Attack Vector

The attack vector for CVE-2025-26902 involves network-based exploitation requiring user interaction. An attacker must convince a WordPress administrator with an active session to visit a malicious webpage while logged into their WordPress dashboard. The malicious page contains a hidden form or script that automatically submits a forged request to the vulnerable Brizy Pro endpoint. Because the browser automatically includes the victim's session cookies with the request, the WordPress site processes the malicious request as if it were legitimately initiated by the administrator.

Typical attack scenarios include:

• Embedding malicious HTML in emails sent to WordPress administrators
• Hosting exploit pages on compromised or attacker-controlled websites
• Leveraging social engineering to direct victims to malicious pages
• Injecting malicious iframes or scripts into third-party sites visited by administrators

Detection Methods for CVE-2025-26902

Indicators of Compromise

• Unexpected changes to WordPress site settings or Brizy Pro configurations without administrator action
• Unusual plugin activity or configuration modifications in WordPress audit logs
• Referrer headers from external domains in server logs for administrative Brizy Pro endpoints
• New or modified user accounts created without authorization

Detection Strategies

• Monitor WordPress admin activity logs for unusual configuration changes or actions performed via Brizy Pro
• Implement Web Application Firewall (WAF) rules to detect and block suspicious POST requests to Brizy Pro endpoints from external referrers
• Review server access logs for requests to Brizy Pro administrative endpoints with missing or external referer headers
• Enable and monitor WordPress security plugins that track administrative actions

Monitoring Recommendations

• Configure WordPress security plugins to alert on unexpected plugin configuration changes
• Implement Content Security Policy (CSP) headers to restrict where forms can be submitted
• Monitor for outbound connections from your WordPress server that could indicate post-exploitation activity
• Regularly audit user accounts and permissions for unauthorized modifications

How to Mitigate CVE-2025-26902

Immediate Actions Required

• Update Brizy Pro plugin to a version newer than 2.6.1 that includes CSRF protection fixes
• Review WordPress audit logs for any suspicious administrative actions that may have occurred before patching
• Verify that no unauthorized changes have been made to site configurations, user accounts, or content
• Educate administrators about the risks of clicking unfamiliar links while logged into WordPress

Patch Information

Users should update the Brizy Pro plugin to the latest available version that addresses this CSRF vulnerability. For detailed vulnerability information and patch details, refer to the Patchstack WordPress Vulnerability Database.

Plugin updates can be performed through the WordPress admin dashboard under Plugins → Installed Plugins → Brizy Pro → Update Now, or via WP-CLI for automated deployment environments.

Workarounds

• Limit WordPress administrative sessions to trusted networks only using IP-based access restrictions
• Implement a Web Application Firewall with CSRF protection rules to validate referrer headers and block suspicious requests
• Use browser extensions that prevent automatic form submissions from untrusted origins
• Log out of WordPress administrative sessions when not actively performing administrative tasks

# Configuration example - Apache .htaccess IP restriction for wp-admin
# Add to WordPress root .htaccess to restrict admin access by IP
<Directory "/var/www/html/wp-admin">
    Order Deny,Allow
    Deny from all
    Allow from 10.0.0.0/8
    Allow from 192.168.1.0/24
</Directory>

# Enable mod_headers and set SameSite cookie attribute
# Add to Apache configuration
Header always edit Set-Cookie ^(.*)$ "$1; SameSite=Strict"